Fig. 5.
NK cell and mast cell production from CD34+CD81+, CD34lowCD81+, and CD34+CD81high cells cultured on stroma derived from NOD/SCID fetal-mouse liver.
(A) Appearance of NK and mast cells derived from the CD34+CD81high fraction in 4-week culture with NOD/SCID fetal-mouse liver stroma. The photograph shows 2 mast cells and a large granular NK cell stained with May-Grünwald–Giemsa solution (× 1000). (B) The presence of mast cells were confirmed by the reaction with a mAb specific to human tryptase on APAAP staining. The photograph shows positive staining for tryptase in mast cells derived from the CD34+CD81high fraction (× 1000). (C) Flow cytometric profiles of expression of CD56 and CD3 on cells cultured from CD34+CD81+, CD34lowCD81+, and CD34+CD81high cells on NOD/SCID fetal-mouse liver stroma for 4 weeks.